I'm so depressed, what can I do? Life doesn't matter anymore!?

It might be worth mentioning that my friend took piano lessons at a young age and to this day only knows one song. It wouldn't have automatically made you a great pianist to have had lessons, and besides, what parent wants to blow their money on music lessons for a mere toddler? No reason to hold resentment against your own mom and dad. At all. And it's still possible that with dedication and practise, you will still be able to learn to play piano.